lldb/test/API/functionalities/gdb_remote_client/TestMemoryRegionDirtyPages.py

   1 import lldb
   2 from lldbsuite.test.lldbtest import *
   3 from lldbsuite.test.decorators import *
   4 from lldbsuite.test.gdbclientutils import *
   5 from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase
   6
   7
   8 class TestMemoryRegionDirtyPages(GDBRemoteTestBase):
   9     @skipIfXmlSupportMissing
  10     def test(self):
  11         class MyResponder(MockGDBServerResponder):
  12             def qHostInfo(self):
  13                 return "ptrsize:8;endian:little;vm-page-size:4096;"
  14
  15             def qMemoryRegionInfo(self, addr):
  16                 if addr == 0:
  17                     return "start:0;size:100000000;"
  18                 if addr == 0x100000000:
  19                     return "start:100000000;size:4000;permissions:rx;dirty-pages:;"
  20                 if addr == 0x100004000:
  21                     return (
  22                         "start:100004000;size:4000;permissions:r;dirty-pages:100004000;"
  23                     )
  24                 if addr == 0x1000A2000:
  25                     return "start:1000a2000;size:5000;permissions:r;dirty-pages:1000a2000,1000a3000,1000a4000,1000a5000,1000a6000;"
  26
  27         self.server.responder = MyResponder()
  28         target = self.dbg.CreateTarget("")
  29         if self.TraceOn():
  30             self.runCmd("log enable gdb-remote packets")
  31             self.addTearDownHook(lambda: self.runCmd("log disable gdb-remote packets"))
  32         process = self.connect(target)
  33
  34         # A memory region where we don't know anything about dirty pages
  35         region = lldb.SBMemoryRegionInfo()
  36         err = process.GetMemoryRegionInfo(0, region)
  37         self.assertSuccess(err)
  38         self.assertFalse(region.HasDirtyMemoryPageList())
  39         self.assertEqual(region.GetNumDirtyPages(), 0)
  40         region.Clear()
  41
  42         # A memory region with dirty page information -- and zero dirty pages
  43         err = process.GetMemoryRegionInfo(0x100000000, region)
  44         self.assertSuccess(err)
  45         self.assertTrue(region.HasDirtyMemoryPageList())
  46         self.assertEqual(region.GetNumDirtyPages(), 0)
  47         self.assertEqual(region.GetPageSize(), 4096)
  48         region.Clear()
  49
  50         # A memory region with one dirty page
  51         err = process.GetMemoryRegionInfo(0x100004000, region)
  52         self.assertSuccess(err)
  53         self.assertTrue(region.HasDirtyMemoryPageList())
  54         self.assertEqual(region.GetNumDirtyPages(), 1)
  55         self.assertEqual(region.GetDirtyPageAddressAtIndex(0), 0x100004000)
  56         region.Clear()
  57
  58         # A memory region with multple dirty pages
  59         err = process.GetMemoryRegionInfo(0x1000A2000, region)
  60         self.assertSuccess(err)
  61         self.assertTrue(region.HasDirtyMemoryPageList())
  62         self.assertEqual(region.GetNumDirtyPages(), 5)
  63         self.assertEqual(region.GetDirtyPageAddressAtIndex(4), 0x1000A6000)
  64         region.Clear()